https://www.etsy.com/shop/patriciasaabdesigns Pattye sells Serafil thread and a knotting starter kit and ships world wide! She is always helpful and responsive if you send her a private message.
Here is the link to Pattye's Etsy store. She is a wonderful, honest and very helpful lady, and she ships over seas all the time. Also check out her knotting starter kit. https://www.etsy.com/shop/patriciasaabdesigns
Good luck!
Hi softnsunny, So glad you found Patty's Serafil thread to meet your needs. I love it too! When back knotting through the last pearls on a strand, I leave three or four unknotted. Then add the gimp and clasp. I lay them flat on the table and ease the thread through while applying light pressure...